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Introduction to Acids and Bases

Which of the ...

Question

Which of the following is amphoteric in nature?

A

H C l O_{4}

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B

N a O H

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C

Z n (O H)_{2}

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D

None of these

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Solution

The correct option is C $Z n (O H)_{2}$
$Z n (O H)_{2}$ amphoteric in nature
$H C l O_{4}$ strong acid
$N a O H$ strong base

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Similar questions

Z n {(O H)}_{2}

is dissolved in both

{N H}_{4} O H

N a O H

solution. Reason: Both

N a O H

{N H}_{4} O H

being basic can dissolve amphoteric

Z n {(O H)}_{2}

.

Q. Which ions show the amphoteric nature when dissolved in excess of

N a O H / {N H}_{4} O H

Q. Which two sets of reactants best represent the amphoteric character of

Z n {(O H)}_{2}

Z n {(O H)}_{2} (s)

{O H}^{-} (a q)

Z n {(O H)}_{2} (s)

H_{2} O (l)

Z n {(O H)}_{2} (s)

H^{+} (a q)

Z n {(O H)}_{2} (s)

{N H}_{3} (a q)

Z n {(O H)}_{2}

is an amphoteric hydroxide which is involved in the following two equilibria existing simultaneously in aqueous solution.

Z n {(O H)}_{2} (s) ⇌ {Z n}^{2 +} (a q) + 2 {O H}^{-} (a q)

K_{s p} = 1.2 \times 10^{- 17}

Z n {(O H)}_{2} (s) + 2 {O H}^{-} (a q) ⇌ {[Z n ({O H)}_{4}]}^{2 -} (a q)

K_{c} = 0.12

p H

the solubility of

Z n (O H)_{2}

will be minimum?

Q. Which of the following is amphoteric in nature?

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